US20020121031A1 - 2a improvements - Google Patents

2a improvements Download PDF

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Publication number
US20020121031A1
US20020121031A1 US09/238,155 US23815599A US2002121031A1 US 20020121031 A1 US20020121031 A1 US 20020121031A1 US 23815599 A US23815599 A US 23815599A US 2002121031 A1 US2002121031 A1 US 2002121031A1
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United States
Prior art keywords
elements
footwear
article
sole
insert
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US09/238,155
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English (en)
Inventor
Steven Smith
Allen W. Van Noy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fila Sport SpA
Original Assignee
Fila Sport SpA
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Publication date
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Priority to US09/238,155 priority Critical patent/US20020121031A1/en
Assigned to FILA SPORT, S.P.A. reassignment FILA SPORT, S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH, STEVEN, VAN NOY, ALLEN W.
Publication of US20020121031A1 publication Critical patent/US20020121031A1/en
Priority to US10/603,654 priority patent/US6883253B2/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/141—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form having an anatomical or curved form
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A43B13/186—Differential cushioning region, e.g. cushioning located under the ball of the foot
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
    • A43B21/26—Resilient heels
    • A43B21/28—Pneumatic heels filled with a compressible fluid, e.g. air, gas
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A43B7/1435—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the joint between the fifth phalange and the fifth metatarsal bone

Definitions

  • the present invention is directed to a method and apparatus corresponding to an insert for an article of footwear with improved elastically deformable elements and arrangements therefor which permit optimization of the biomechanics of a user's foot.
  • Elastically deformable elements 14 of Frachey et al '060 contained inside an insert 13 are arranged in seat 16 formed in wedge 3 .
  • the deformable elements 14 are formed by molding a synthetic high elasticity material and are substantially barrel shaped, with their major cross-sections being substantially in the central region 20 in which said elements are joined together by an integral bridging portion 28 .
  • Deformable elements 14 are arranged in an insert 13 made of thermoplastic material enclosed in an airtight casing 15 which is constructed of plastic material such as polyurethane or similar material.
  • the air inside casing 15 has a pressure of less than or equal to atmospheric pressure.
  • the article of footwear of Frachey et al '060 comprises a vamp A and a lower support part 1 comprising a sole 2 , for example of synthetic rubber, to which a wedge 3 , for example of thermoplastic polyurethane, is fixed in a known manner.
  • the wedge comprises a recess 4 , bounded by a raised edge 10 , carrying a mounting insole 5 , for example a cork, on which there is positioned a further insole 6 , for example of fabric (not shown in FIG. 181).
  • the sole 2 constructed advantageously of 5 rubber, comprises the usual notches 7 and incisions or recessed portions 8 in its lower surface. It also comprises a front raised edge 11 , and a lateral edge 12 which extends along the entire remaining perimeter of the sole.
  • an insert 13 comprising elastically deformable elements 14 made of thermoplastic material enclosed in an air-tight casing 15 constructed of plastic material such as polyurethane or a similar material.
  • casing 15 there is present air that has a pressure less than or equal to atmospheric pressure.
  • the insert 13 is positioned in seats 16 and 17 provided in the wedge 3 and in the insole 5 respectively, said seats being superposed.
  • seat 17 can be omitted with insert 13 located only in seat 16 of 11 wedge 3 , so that the insole 5 is superimposed and covers seat 16 .
  • the elements 14 of the insert 13 are formed by molding any synthetic high-elasticity material and are substantially barrel-shaped, i.e., they are tapered at their opposing free ends 18 and 19 and have their major cross-section substantially in the central region 20 in which said elements are joined together by an integral bridging portion 20 A.
  • the barrel shaped elements are barrel shaped in the sense that all vertical cross sections taken along the vertical axis thereof are barrel shaped. Due to manufacturing requirements of insert 13 , free ends, 18 , 19 of barrel-shaped elements 14 are fastened to casing 15 .
  • insert 13 This is actually the preferred embodiment of insert 13 , wherein in a first phase, elements 14 are obtained by means of molding; subsequently they are encased inside thermo-soldering plastic sheets which constitute casing 15 ; the elements 14 are encased by sheets when they are at a relatively high temperature so that a welding of free ends 18 , 19 of elements 14 with the sheets occurs.
  • the connection between casing 15 and the barrel-shaped elements has the advantage of anchoring said elements inside said casing, thereby preventing the casing and barrel-shaped elements from moving during use of the article of footwear according to the invention and so contributing together with the mutual connection of the barrel-shaped elements 14 to desirable multidirectional stability and flexibility of the resulting article of footwear. This affords greater stability for insert 13 within the article of footwear, and permits better performance of the function for which it is intended, which functions will be further defined below.
  • the shape of elements 14 allows considerable absorption of the stresses caused by the user's foot as he moves, and at the same time allows a large part of the absorbed energy to be retransmitted rapidly but gradually to the foot.
  • the insole 6 comprises on that face 21 , facing the insole 5 , a projection 22 of a shape corresponding to said seats and arranged to cooperate with them and with the insert 13 .
  • the projection 22 can be omitted.
  • the casing 15 of insert 13 comprises a flange 23 which, when the insert 13 has been positioned in the lower part 1 of the article of footwear, rests on a step 24 provided between the insole 5 and an inner surface 25 of the wedge 3 .
  • the flange 23 rests on the contour of the wedge seat 16 .
  • the sole comprises a reinforcement element 28 positioned below the insert 13 or in other positions of the sole where other inserts may be located, said reinforcement element 28 being formed, for example, of plastic material e.g. of natural or synthetic rubber and being advantageously somewhat transparent. Element 28 may or may not be tinted. Reinforcing element 28 is of a wear and abrasion resistant material and is preferably located in the heel portion and in the metatarsal portion of the sole.
  • Elastic inserts like the one disclosed above can be located in the other regions of the support part 1 , in particular in proximity to the frontal region of the sole 2 and the wedge 3 and more particularly in the metatarsal zone 3 A as shown in dotted lines in FIG. 179, where the seat is referenced by 16 A and the insert by 13 A, thus allowing the user (particularly an athlete) to obtain increased pickup during acceleration or during changes in the rate of movement.
  • the insert 13 shown in FIG. 179 and 181 comprises only one layer of elements 14 ; however, there can be provided an insert 13 having two or more layers of elements 14 superimposed as shown in FIG. 182.
  • a first layer supports the second whose deformable elements rest on the elements positioned below.
  • This conventional insert permits an improvement in the return of par of the energy (passed on by the user to the ground) to the foot of the user. It must be noted that, in the same manner previously described, free ends 18 , 19 of barrel-shaped element 14 , are fastened to (or soldered on) casing 15 , whereas the contact surfaces of the two layers of element 14 , if used, would be fastened to (or soldered on) each other. This affords stability for insert 13 , preventing one of the layers from sliding over the other one within casing 15 .
  • An article of footwear constructed in accordance with the invention satisfies the aforesaid requirements and in particular enables most of the energy expended during movement to be retransferred to the foot.
  • the present invention has as the object thereof the provision of a method and apparatus which permits an article of footwear to have improved elastically deformable elements and arrangements therefore.
  • the elements serve to optimize the biomechanics of the user's foot when wearing the article of footwear wherein the use of deformable elements which make it possible to provide for a more continuous contact therewith by the user's foot and therefore more evenly distribute energy transferred between the user's foot and the elements while maintaining the flexibility necessary in the article of footwear sole.
  • a further object of the present invention is to utilize deformable elements connected by bridging portions such that, when constructed as deformable batteries, for example, such can more easily bend along the bridging portion. Accordingly, one aspect of the present invention is to align the deformable elements such that the bridging portions are aligned with flex lines of the foot so as to thereby better follow and maintain contact with the sole of a user's foot.
  • a further advantage of the present invention is that the casing or encapsulating bag is formed by a vacuum forming or blow molding which thereby lowers the cost of manufacturing and makes the same easier to accomplish.
  • a further object of the present invention is to provide an arrangement whereby the stiffness and viscoelastic properties of the deformable elements are varied throughout positions in the sole in order to match the biomechanics of the user's foot, and preferably, according to the particular athletic activity of the user.
  • FIG. 1 is a top, front and left side perspective view of a SOLE INSERT embodying a first embodiment of the present invention
  • FIG. 2 is a top plan view thereof, the bottom view being a mirror image of the top view shown:
  • FIG. 3 is a front elevational view thereof
  • FIG. 4 is a right side elevational view thereof
  • FIG. 5 is a cross-sectional view thereof taken along line 5 - 5 of FIG. 2;
  • FIG. 6 is a top plan view thereof showing the pillars in phantom lines
  • FIG. 7 is a top, front and left side perspective view of a second embodiment thereof.
  • FIG. 8 is a top plan view thereof, the bottom view being a mirror image of the top view shown;
  • FIG. 9 is a front elevational view thereof
  • FIG. 10 is a left side elevational view thereof
  • FIG. 11 is a right side elevational view thereof
  • FIG. 12 is a cross-sectional view thereof taken along line 12 - 12 of FIG. 8;
  • FIG. 13 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 14 is a top, front and left side perspective view of a third embodiment of the present invention.
  • FIG. 15 is a top plan view thereof, the bottom view being a mirror image of the top view shown;
  • FIG. 16 is a front elevational view thereof
  • FIG. 17 is a left side elevational view thereof
  • FIG. 18 is a right side elevational view thereof
  • FIG. 19 is a cross-sectional view thereof taken along line 19 - 19 of FIG. 15;
  • FIG. 20 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 21 is a top, front and left side perspective view of a fourth embodiment of the present invention.
  • FIG. 22 is a top plan view thereof, the bottom view being a mirror image of the top plan view shown;
  • FIG. 23 is a front elevational view thereof
  • FIG. 24 is a right side elevational view thereof
  • FIG. 25 is a cross-sectional view thereof taken along line 25 - 25 of FIG. 22;
  • FIG. 26 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 27 is a top, front and left side perspective view of a fifth embodiment thereof.
  • FIG. 28 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 29 is a front elevational view thereof
  • FIG. 30 is a left side elevational view thereof
  • FIG. 31 is a right side elevational view thereof
  • FIG. 32 is a cross-sectional view thereof taken along line 32 - 32 of FIG. 28;
  • FIG. 33 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 34 is a top, front and left side perspective view of another embodiment of the present invention.
  • FIG. 35 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 36 is a front elevational view thereof
  • FIG. 37 is a left side elevational view thereof
  • FIG. 38 is a right side elevational view thereof
  • FIG. 39 is a cross-sectional view thereof taken along line 39 - 39 of FIG. 35;
  • FIG. 40 is a top plan view hereof showing the pillars of the insert in phantom lines;
  • FIG. 41 is a top of a front and right side perspective view thereof
  • FIG. 42 is a top plan view thereof, the bottom plan view thereof being a mirror image of the top plan view shown;
  • FIG. 43 is a front elevational view thereof
  • FIG. 44 is a left side elevational view thereof
  • FIG. 45 is a right side elevational view thereof
  • FIG. 46 is a cross-sectional view thereof taken along line 46 - 46 of FIG. 42;
  • FIG. 47 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 48 is a bottom, rear and right side elevational view of another embodiment of the present invention.
  • FIG. 49 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 50 is a front elevational view thereof
  • FIG. 51 is a left side elevational view thereof
  • FIG. 52 is a right side elevational view thereof
  • FIG. 53 is a top, front and right side perspective view of another embodiment of the present invention.
  • FIG. 54 is a rear, top and left side perspective view thereof
  • FIG. 55 is a top plan view thereof, the bottom view being a mirror image of the top plan view shown;
  • FIG. 56 is a rear elevational view thereof
  • FIG. 57 is a right side elevational view thereof
  • FIG. 58 is a cross-sectional view thereof taken along line 58 - 58 of FIG. 55;
  • FIG. 59 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 60 is a bottom, right side and rear perspective view of another embodiment of the present invention.
  • FIG. 61 is a top plan view thereof
  • FIG. 62 is a front elevational view thereof
  • FIG. 63 is a rear elevational view thereof
  • FIG. 64 is a right side elevational view thereof
  • FIG. 65 is a bottom plan view thereof
  • FIG. 66 is left side elevational view thereof
  • FIG. 67 is a cross-sectional view thereof taken along line 67 - 67 of FIG. 61;
  • FIG. 68 is a rear, bottom and left side perspective view thereof
  • FIG. 69 is a top, front and right side perspective view thereof
  • FIG. 70 is a top plan view thereof
  • FIG. 71 is a right side elevational view thereof
  • FIG. 72 is a left side elevational view thereof
  • FIG. 73 is a bottom plan view thereof
  • FIG. 74 is a front elevational view thereof
  • FIG. 75 is a rear elevational view thereof
  • FIG. 76 is a cross-sectional view taken along line 76 - 76 of FIG. 73;
  • FIG. 77 is a top, front and left side perspective view of another embodiment of the present invention.
  • FIG. 78 is a top, rear and left side perspective thereof
  • FIG. 79 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 80 is a front elevational view thereof
  • FIG. 81 is a rear elevational view thereof
  • FIG. 82 is a right side elevational view thereof
  • FIG. 83 is a cross-sectional view thereof taken along line 83 - 83 of FIG. 79;
  • FIG. 84 is a bottom plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 85 is a bottom, front and left side perspective view of another embodiment of the present invention.
  • FIG. 86 is a top, front and right side elevational view thereof
  • FIG. 87 is a top plan view thereof
  • FIG. 88 is a right side elevational view thereof
  • FIG. 89 is a left side elevational view thereof
  • FIG. 90 is a bottom plan view thereof
  • FIG. 91 is a front elevational view thereof
  • FIG. 92 is a rear elevational view thereof
  • FIG. 93 is a cross-sectional view thereof taken along line 93 - 93 of FIG. 90;
  • FIG. 94 is a top, front and right side elevational view of another embodiment of the present invention.
  • FIG. 95 is a rear, bottom and left side perspective view thereof.
  • FIG. 96 is a top plan view thereof; the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 97 is a right side elevational view thereof
  • FIG. 98 is a left side elevational view thereof
  • FIG. 99 is a bottom plan view thereof
  • FIG. 100 is a front elevational view thereof
  • FIG. 101 is a rear elevational view thereof
  • FIG. 102 is a rear, bottom and right side perspective view thereof
  • FIG. 103 is a rear, bottom and front side perspective thereof
  • FIG. 104 is a rear and bottom side perspective view thereof
  • FIG. 105 is a cross-sectional view thereof taken along line 105 - 105 of FIG. 100;
  • FIG. 106 is a top, front and left side view of another embodiment of the present invention.
  • FIG. 107 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 108 is a front elevational view thereof
  • FIG. 109 is a right side elevational view thereof
  • FIG. 110 is a left side elevational view thereof
  • FIG. 111 is a cross-sectional view taken along line 111 - 111 of FIG. 107;
  • FIG. 112 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 113 is a top, front and right side perspective view of another embodiment of the present invention.
  • FIG. 114 is a top plan view thereof, the bottom view being a mirror image of the top plan view shown;
  • FIG. 115 is a front elevational view thereof
  • FIG. 116 is a right side elevational view thereof
  • FIG. 117 is a left side elevational view thereof
  • FIG. 118 is a cross-sectional view thereof taken along line 118 - 118 of FIG. 114;
  • FIG. 119 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 120 is a top, front and right side perspective view of another embodiment of the present invention.
  • FIG. 121 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 122 is a front elevational view thereof
  • FIG. 123 is a right side elevational view thereof
  • FIG. 124 is a left side elevational view thereof
  • FIG. 125 is a cross-sectional view thereof taken along line 125 - 125 of FIG. 121;
  • FIG. 126 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 127 is a top, front and right side perspective view of another embodiment of the present invention.
  • FIG. 128 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view as shown;
  • FIG. 129 is a rear elevational view thereof
  • FIG. 130 is a right side elevational view thereof
  • FIG. 131 is a cross-sectional view thereof taken along line 130 - 130 of FIG. 128;
  • FIG. 132 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 133 is a top, front and right side perspective view of another embodiment of the present invention.
  • FIG. 134 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 135 is a right side elevational view thereof
  • FIG. 136 is a rear elevational view thereof
  • FIG. 137 is a top, front and left side perspective view of another embodiment of the present invention.
  • FIG. 138 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 139 is a right side elevational view thereof
  • FIG. 140 is a rear elevational view thereof
  • FIG. 141 is a top, rear and left side perspective view of another embodiment of the present invention.
  • FIG. 142 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 143 is a right side elevational view thereof
  • FIG. 144 is a rear elevational view thereof
  • FIG. 145 is a cross-sectional view thereof taken along line 145 - 145 of FIG. 142;
  • FIG. 146 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 147 is a bottom, front and left side perspective view of another embodiment of the present invention.
  • FIG. 148 is a top plan view thereof, the bottom plan view being a mirror image of the top plan view shown;
  • FIG. 149 is a right side elevational view thereof
  • FIG. 150 is a rear elevational view thereof
  • FIG. 151 is a bottom, front and right side perspective view of another embodiment of the present invention.
  • FIG. 152 is a top plan view thereof, the bottom view being a mirror image of the top plan view shown;
  • FIG. 153 is a right side elevational view thereof
  • FIG. 154 is a rear elevational view thereof
  • FIG. 155 is a bottom, front and right side perspective view of another embodiment of the present invention.
  • FIG. 156 is a top plan view thereof, the bottom view being a mirror image of the top plan view shown;
  • FIG. 157 is a right side elevational view thereof
  • FIG. 158 is a rear elevational view thereof
  • FIG. 159 is a cross-sectional view thereof taken along line 159 - 159 of FIG. 156;
  • FIG. 160 is a top plan view thereof showing the pillars of the insert in phantom lines;
  • FIG. 161 is a bottom, front and left side perspective view of another embodiment of the present invention.
  • FIG. 162 is a top plan view thereof, the bottom plan view being a mirror image of the view shown;
  • FIG. 163 is a right side elevational view thereof
  • FIG. 164 is a rear elevational view thereof
  • FIG. 165 is a bottom, front and left side perspective view of another embodiment of the present invention.
  • FIG. 166 is a top plan view thereof, the bottom plan view being a mirror image of the view shown;
  • FIG. 167 is a right side elevational view thereof
  • FIG. 168 is a rear elevational view thereof
  • FIG. 169 shows on a reduced scale an example of the orientation of the inserts in a article of footwear utilizing the embodiments of FIGS. 1 - 6 , 7 - 13 , 85 - 93 and 106 - 112 ;
  • FIG. 170 shows on a reduced scale the inserts in an article of footwear which utilizes the embodiments of FIGS. 27 - 33 , 34 - 40 and 41 - 47 ;
  • FIG. 171 shows on a reduced scale an article of footwear which utilizes the inserts of FIGS. 27 - 33 and 125 - 130 ;
  • FIG. 172 illustrates on a reduced scale an article of footwear utilizing the inserts of FIGS. 27 - 33 ;
  • FIG. 173 shows on a reduced scale an article of footwear utilizing the embodiment illustrated in FIGS. 53 - 61 ;
  • FIG. 174 shows on a reduced scale an article of footwear utilizing the embodiments of FIGS. 106 - 112 , 73 - 119 and 120 - 126 ;
  • FIG. 175 illustrates on a reduced scale an article of footwear utilizing the embodiments of FIGS. 77 - 83 and 106 - 112 ;
  • FIG. 176 illustrates on a reduced scale an article of footwear utilizing the embodiments of FIGS. 77 - 84 and 127 - 132 :
  • FIG. 177 illustrates on a reduced scale an article of footwear utilizing the embodiments of FIGS. 53 - 59 ;
  • FIG. 178 illustrates on a reduced scale an article of footwear utilizing the embodiments of FIGS. 77 - 84 and 127 - 132 ;
  • FIG. 179 is an exploded view of the lower part of an article of footwear for a conventional article of footwear
  • FIG. 180 is a bottom view thereof
  • FIG. 181 is a section view taken along lines 181 - 181 of FIG. 180;
  • FIG. 182 is a section view of an alternate embodiment of the conventional article of footwear of FIG. 179.
  • FIGS. 1 through 178 are directed to improved deformable elements and specific arrangements optimized for the biomechanics of a user's foot.
  • FIGS. 1 through 168 disclose improved shapes of the elastically deformable elements, and arrangements therefore within airtight casings.
  • FIG. 6 illustrates an arrangement of elastically deformable elements which are substantially oval shaped in cross-section.
  • the deformable elements have been cored, wherein a hole has been formed through the center of the deformable element in order to reduce the weight of the element.
  • FIG. 6 illustrates an arrangement of elastically deformable members 110 which are substantially oval in a cross-section.
  • Deformable members 110 are provided with holes 112 which reduce their weight. It is also conceived that deformable elements 110 are dimpled or otherwise reduced in order to minimize the weight of elements 110 .
  • elements 110 are vacuumed sealed in a casing 114 .
  • the edges of elements 110 are tapered as shown in dashed lines in FIG. 6 and illustrated as recesses 118 in FIG. 5.
  • FIG. 6 shows an arrangement of deformable elements 110 which are broken down into three deformable element batteries 116 , wherein each battery includes at least two deformable elements 110 which are joined by integral bridging portions 120 .
  • Each of the deformable element batteries 116 are joined by battery bridging portion 122 .
  • bridging portions 122 are integrally formed with casing 114 which is vacuum sealed around elements 110 .
  • deformable elements 110 with an oval cross-section, is that it is possible to use larger elements which provide a more continuous contact and therefore more evenly distributed energy transfer between the user's foot and the element, while maintaining the flexibility necessary in an article of footwear sole. For example, it has been found that it is more costly to provide an array of elastic members including a large number of elements 110 , and that the flexibility of the resulting sole is reduced if larger elements are used. It has also been found that deformable elements that are substantially round or barrel shaped do not flex with the sole of the article of footwear during use and therefore do not provide continuous support of the user's foot during use.
  • the present invention employs the use of oval deformable elements 110 connected by bridging portion 120 .
  • deformable battery 116 can more easily bend along bridging portion 120 . Therefore, an aspect of the invention is to align deformable elements 110 such that bridging portions 120 are aligned with flex lines of a foot.
  • the flex lines referred to are generally known in that when a user is walking or running, the sole of the user's foot bends throughout each step. Therefore an aspect of the invention is to construct deformable elements 110 and batteries 116 such that deformable elements 110 can flex with the bend lines of a foot and thereby better follow and maintain contact with the sole of a user's foot.
  • casing or encapsulating bag 114 is formed by a vacuum forming or blow molding which thereby eases and lowers the cost of manufacturing.
  • Another aspect of the invention is that the arrangement, stiffness and viscoelastic properties of deformable elements are varied throughout positions in the sole in order to match the biomechanics of the user's foot, and preferably, according to the particular athletic activity.
  • FIGS. 160 - 167 show that a deformable element 110 may comprise a single unitary member having either a plurality of holes 124 or none at all to best suit the effect on the foot of the user and to minimize weight where necessary.
  • FIGS. 169 - 178 disclose a variety of arrangements of deformable elements 110 and deformable batteries 116 according to a particular athletic activity. As shown in FIG. 169, deformable elements 110 are arranged inside deformable batteries 116 such that bridging portions 120 and 122 are aligned with flex lines of the foot. Therefore, bridging portions 120 , 122 allow deformable elements 110 and batteries 116 to flex as the sole of the user's foot flexes during an athletic activity.
  • FIG. 169 The arrangement shown in FIG. 169, is optimized for running.
  • a heel unit is aligned with the first contact area of the sole with the ground during the heel strike phase of running gait.
  • the rearmost battery of the heel unit is hinged to the central battery of the heel unit to reduce the accelerating leverage that results from the heel striking a unitary cushioning element.
  • a separate battery of the heel unit is placed toward the arch of a wearer's foot and is made more stiff than the other parts of the heel unit. This arrangement reduces the pronation rate of a wearer and thus reduces the risk of chronic stability related injuries.
  • a forefoot section of three parts is provided at least under the first and second metatarsal-phalangeal joints of a wearer. This is an area exposed to great stress during the push off phase of the running gait.
  • a narrowed and hinged segmental arrangement is provided in the forefoot area unit and includes a hinge 122 leading to a battery under the wearer's great toe.
  • a hinge 120 between the elements may be provided at any point in the structure such that the hinge is in general alignment with the joints of a wearer's foot or is oriented to match with the rotational distortion of the sole and midsole resulting from their flexion and compression during foot contact with the ground common to running.
  • FIG. 170 includes a separate element placed on the medial border of the sole, generally under the wearer's arch. This has a greater stiffness then the other elements in the heel area of this arrangement to reduce the degree or rate of pronation of a wearer's foot during running.
  • the forefoot has two separate elements with an area of separation corresponding generally to the metatarsal-phalangeal joints of a wearer.
  • FIG. 171 includes a forefoot pad under the first, second and third metatarsal-phalangeal joints of a wearer.
  • the barrel elements shown therein are ovoid and their longitudinal axis is generally aligned with the flex lines of a wearer's foot to permit greater ease of flexion.
  • FIG. 172 shows a heel element with a hinged portion between the central heel cushioning portion and a lateral cushioning portion positioned to absorb some impact energy upon the heel striking the same.
  • the hinging reduces the tendency of a heel to act as a unitary plate of material and thus reduces the leveraged acceleration of the sole towards the ground. This in turn reduces the rate of pronation of a wearer.
  • FIG. 173 shows a heel element with a hinged portion between the central heel cushioning portion and a lateral cushioning portion positioned to absorb some impact energy at heel strike.
  • the rear lateral border of the pad is positioned away from the outside border of the sole and midsole to permit encapsulation of the parts with a foam such as PU or EVA.
  • FIGS. 174 through 177 illustrate arrangements optimized for basketball.
  • FIG. 174 shows a sole including two heel and two forefoot elements divided about a generally longitudinal axis. This division reduces the tendency of the cushioning elements to act as a monolithic sheet and thus reduces the leveraged acceleration resulting from forceful ground impacts on the lateral or medial borders of the article of footwear. These impacts may occur during landing on a court surface after jumping in the air.
  • FIG. 175 includes cushioning elements at the rear of the heel to protect the wearer from impact shock during running on a court surface.
  • the forefoot includes a laterally placed element. This reduces the tendency of the sole to collapse under the forefoot lateral border during the motion known as cutting, or the application of other rapid lateral shearing forces to the article of footwear.
  • FIG. 176 provides a heel cushion for court running actions and a forefoot pad positioned in from the borders of the sole. This permits full encapsulation of the element in foam to reduce manufacturing costs while still permitting a user the extraordinary benefits of the cushioning elements featured in this invention.
  • FIG. 177 shows an article of footwear sole including a heel cushioning element provided for comfort during the running phase of basketball game. This is positioned inward from the border of the sole to permit full encapsulation of the part in foam.
  • FIG. 178 illustrates an arrangement optimized for tennis.
  • FIG. 178 shows a sole featuring two aspects of the present invention.
  • the heel provides cushioning under the calcaneus of a wearer during the heel strike motions associated with lunging for a stroke or running on the heels.
  • a separate forefoot section cushions the foot under the first four metatarsal-phalangeal joints of a wearer. This is an area exposed to stress by the motions of service and many movements needed to position a player for optimum return strokes.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Adornments (AREA)
US09/238,155 1998-01-30 1999-01-28 2a improvements Abandoned US20020121031A1 (en)

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US09/238,155 US20020121031A1 (en) 1998-01-30 1999-01-28 2a improvements

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CA2320266A1 (en) 1999-08-05
AU749689B2 (en) 2002-07-04
US20040049947A1 (en) 2004-03-18
DE69926340T2 (de) 2006-06-01
WO1999038403A1 (en) 1999-08-05
ATE300201T1 (de) 2005-08-15
EP1051090B1 (de) 2005-07-27
EP1051090A1 (de) 2000-11-15
CA2320266C (en) 2005-08-30
EP1051090A4 (de) 2002-11-06
ID23579A (id) 2000-05-04
US6883253B2 (en) 2005-04-26
AU2561499A (en) 1999-08-16
DE69926340D1 (de) 2005-09-01

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